/*
 * Copyright 2016 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 */
package jsinterop.base;

import static junit.framework.Assert.assertTrue;
import static junit.framework.Assert.fail;

/** Utilities for asserting exceptions. */
final class ExceptionAssert {

  public static void assertThrowsClassCastException(Runnable runnable) {
    try {
      runnable.run();
      fail("Exception not thrown");
    } catch (ClassCastException expected) {
      // Expected
    }
  }

  public static void assertThrowsHiddenClassCastException(Runnable runnable) {
    try {
      runnable.run();
      fail("Exception not thrown");
    } catch (AssertionError expected) {
      assertTrue(expected.toString(), expected.getCause() instanceof ClassCastException);
    }
  }

  private ExceptionAssert() {}
}
